Process and apparatus for supplying air and oxygen or the like to independent deep-diving apparatus.



v H. STELZNER. PROCESS AND APPARATUS FOR SUPPLYING AIR AND OXYGEN OR THE LIKE To INDEPENDENT DEEP DIVING APPARATUS. APPLICATION FILED AuG.30. 1913.

1,180,744. Patented Apr. 25, 1916. A

Dix?

is"a specificationg LO' "lhi s invention' diyi ng appu'atus,that, kto paratus of the 'kind I whelf ciliwqer beingsupplied; with r air, pumped fi-omi t1 6 oufisl Qlppziliedflby th w diver; 1s} p111 fie U thrmigh" ii' c'artridge ofwba hon upgm aim having'beenp ;-,gen, it is returned, in Y "linjugain jby the diver.- I 20 diving apfiamtxis Ofthifiklfl What 1 m apparatuges ar for tise $611 M Iii "i I apparatus, and th 5 he" 0m pressure reducing valve:- is not absolutely desired mixing proportion of the two gases,

the charging of the two compressed air and oxygen containers may be effected under suitably different respective pressures. For instance, if the oxygen container and the compressed air vessel container have each a capacity of two liters, and if the first container is filled with oxygen under a pressure of 100 atmospheres, and the other container is filled with compressed air having a pressure of 200 atmospheres, then on opening the two containers and when the pressures have become equalized, there will be a pressure of 150 atmospheres in each container, and in the oxygen container, there will be 200 liters of oxygen plus 100 liters of air which latter have issued from the container that was filled with compressed air (200 atmospheres). On flowing out, the contents of the two containers will mix togetheronce more so that now a mixture will issue containing about 47.3 per cent. of oxygen and 52.7 per cent. of nitrogen. Now, if compressed air at 150 atmospheres is charged into the one container and the other container is charged with oxygen ar- 150 atmospheres this would produce a mixture of 60 per cent. of oxygen and 40 per cent. of nitrogen and therefore, too much oxygen would emerge at great depths.

Claims:

1. An independent deep diving apparatus supplied with oxygen and air or any indifferent gas, comprising a circulation conduit for the breathing air, means for absorbing the carbonic acid contained in said air inserted in said conduit, a compressed air tank, an oxygen tank, both said tanks communicating with said circulation conduit and a pressure reducing valve between'the compressed air tank and the circulation conduit. I

2. The herein described method of supplying oxygen and air to independent ,div

ing apparatus for greater depths, consisting in separately supplying the oxygefl and the air to the diving apparatus and'mixing them only when the apparatus is opera tion. 1 v

3. The herein described inethod of supplying oxygen and air to independent diving 4. An independent deep diving apparatus supplied with oxygen and air, comprising a circulation conduit for the breathing air, means for absorbing the carbonic acid contained in said air, inserted in'said conduit, a vessel for compressed air and a vessel for oxygen in communication with said circulation conduit, the volumes ofsaid vessels being made to correspond to the ratio of the quantity of air and oxygenrespectively required.

5. An independent deep diving apparatus supplied with oxygen and air, comprising a circulation conduit for the breathing air, means for absorbing the carbonic acid con tained in said air, inserted in said conduit, a vessel with compressed air and a vessel with compressed oxygen, said vessels being of diiferent sizes and in communication with said circulation conduit, the ratio of the pressure of the air and the oxygen respectively and the ratio of the size of the two quantity of the two gases required.

6. An Independent deep diving apparatus supplied with oxygen and air, comprising a circulation conduit for the breathin air,

means for absorbin the carbonic aci tained in said air, inserted in said conduit, a vessel for compressed air and a vessel for oxygen communicating with said circulation conduit, the volume of the oxygen vessel and, the volume of the air vessel being made 'at a ratio of about 6 to 20.

cating by said injector with a point of the said circulation conduit ahead of the said absorbing means, the latter vessel communicating with a point of said circulation conduit behind said absorbing means, the volumes of said vessels corresponding to the ratio of the quantityof air and oxygen respectively required.

In testimony whereof I aflix my signature in presence of two witnesses.

HERMANN STELZNER.

90 vessels corresponding to the 'ratio of the 

